21112677079 has 16 divisors (see below), whose sum is σ = 23153679360. Its totient is φ = 19133543520.

The previous prime is 21112677067. The next prime is 21112677119. The reversal of 21112677079 is 97077621112.

It is not a de Polignac number, because 21112677079 - 2⁷ = 21112676951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112677059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172744 + ... + 268450.

It is an arithmetic number, because the mean of its divisors is an integer number (1447104960).

Almost surely, 2^21112677079 is an apocalyptic number.

21112677079 is a deficient number, since it is larger than the sum of its proper divisors (2041002281).

21112677079 is a wasteful number, since it uses less digits than its factorization.

21112677079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96030.

The product of its (nonzero) digits is 74088, while the sum is 43.

The spelling of 21112677079 in words is "twenty-one billion, one hundred twelve million, six hundred seventy-seven thousand, seventy-nine".